Although the fetus is sleeping most of the time, but sleep is short-term sleep, usually wake up to play for about 20-45 minutes.
In addition to playing with the umbilical cord, the fetus will also do a variety of sports, such as stretching his arms and kicking his legs, turning over, serial kicking, sucking fingers, swimming, etc., there are many skills. Sometimes, pregnant women may feel that the fetal movement is rhythmic, which is actually the fetus hiccups.
However, this hiccup is not the same as our full hiccup. This is a normal physiological diaphragmatic spasm of the fetus, so pregnant women should not worry too much.